Vitrectomy cutting mechanism

Details Vitrectomy cutting mechanism Vitrectomy cutting mechanism

1985-11-19

1987-09-29

Apley, Richard J.

Surgery

Truss

Pad

604 22, A61B 1732

Patent

active

046962980

ABSTRACT:
An improved vitrectomy probe for removing vitreous and cutting mechanism therefore. A hollow elliptically flared cutting blade is reciprocated within a smooth-bore hollow needle of a microsurgical vitrectomy probe across a cutting edge of the outer needle slicing the fibrous material of the vitreous. The cutting blade is configured to provide a more even contact of the cutting surfaces as the cutting blade is reciprocated across the cutting edge of the probe needle. A pressurized fluid source, diaphragm and spring cooperate to provide for the reciprocation of the blade.

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patent: 4530359 (1985-07-01), Helfgott et al.
patent: 4601290 (1986-07-01), Effron et al.

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